The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2010
Filed:
Nov. 17, 2004
Applicants:
Rudolf Moser, Schaffhausen, CH;
Viola Groehn, Dachsen, CH;
Thomas Egger, Kempthal, CH;
Fritz Blatter, Reinach, CH;
Inventors:
Rudolf Moser, Schaffhausen, CH;
Viola Groehn, Dachsen, CH;
Thomas Egger, Kempthal, CH;
Fritz Blatter, Reinach, CH;
Assignee:
Merck Eprova AG, Schaffhausen, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 31/221 (2006.01); C07D 475/04 (2006.01); A61P 25/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
Crystal forms of (6R)-L-erythro-tetrahydrobiopterin dihydrochloride, hydrates and solvates and processes for their preparation are provided. These crystal forms are either intermediates for the preparation of stable polymorphic form B or are suitable for solid formulations.